.mistake {
  margin-top: 100px;
  margin-bottom: 100px;
  width: 100%;
  height: 100%;
  overflow: hidden;
  position: relative;
}

.num {
  font-size: 12.8rem;
  text-align: center;
}

.txt {
  text-align: center;
}

.links {
  margin: 0 auto;
  width: 18.1rem;
  padding-top: 2rem;
}

.links a {
  width: 7.05rem;
  height: 2.75rem;
  border-radius: 1rem;
  background: #CCC;
  display: block;
  float: left;
  line-height: 2.75rem;
  text-align: center;
  color: #FFF;
  text-decoration: none;
  margin-left: 2rem;
}
